An experiment was conducted to test the ability of rats to navigate a maze, as measured by the time it takes rats to find food at the end of the maze.

The maze completion times (in minutes) for 25 male and 28 female rats were observed, with the results given below.

	Male	Female
Mean	64.19	56.85
StDev	13.845	13.747

If conducting a hypothesis test to see whether the average completion time is significantly different for male and female rats, what is themagnitudeof t, the test statistic?

[If you have a negative value then just choose the correct magnitude - i.e. the value as a positive number]